Finally I have a good look of the iCUE software.
Indeed, both fans of the H100i PRO RGB connected according to the manual are there, the software provides RPM information of both fans. Around 950 under quiet mode.
I have another questions here: The 9600K's frequencies alternated between 3.7 and 4.6 while I was just using the desktop like browsing. I was not running any games at all.
Is that because I have set the XMP_1 profile in the BIOS of the Asus ROG Strix Z390-F?
Well, the temperature is okay, it s between 31 and 35C under such condition, room temperature is around 23C, I closed all the windows and have the warmer on light. But I don't understand why the 9600K fluctuates betwwen 3.7 and 4.6. My 3570K previously didn't jump to the Turbo mode unless I ran games. Any clues?